Determining if a query returns 'no rows' in vb.net

Question

I am using MS SQL Server as my database and VB.NET as my back-end.

I want to determine if my query in sql command text returns no rows. I tried to have a query that retu

Answer 1

        Dim RowsReturned As Integer
        Cmd.CommandText = "SELECT * FROM tblExample WHERE PKeyNo =999"
        cmd.CommandType = CommandType.Text


        RowsReturned = cmd.ExecuteScalar()

        If RowsReturned = 0 Then
                'No rows
        Else 
           'Has Rows